Detail

Features:
Shell Color: Black
Light Color: White+yellow
Mode: Flash, steady, yellow(long press to turn it on)
Material: Metal
Lumen: 400LM
Voltage: DC 5V
Charging time: 2-4 hours
Battery: 1200mAh lithium polymer battery
Item Diameter: 41*73*27 mm
Shock sensor, when light turn off, go on riding and the light will turn on. 
If you forget to turn off the light, after 3 minuters, it will turn off by itself.
Power save, aurora mode can be used continuously for 2 hours at normal use or 6 hours at power saving mode.
Recommended use for night riding, mountain bike, fixed gear bike and so on.

Brand New and High Quality
Small size and easy to carry, safe driving at night
Safety, no glare, accident prevention.
USB charging, easy to use.
Easy to install, anti-fall protection.
Metal material, durable to use and has excellent thermal conductivity.
Charged by connecting the Micro USB cable to computer or plugging phone charger to wall power socket